This change in head coach did not have the desired effect, and after the 2010–2011 season, Rupel Boom were relegated back to the Third Division.

Rupel Boom eventually lost the quarter finals against Mons with 2–0 in the first leg and 2–2 draw at home.

In May 2013 player Alexander Bell was selected for Scotland u20 for an international youth tournament in Den Haag, Netherlands.

In his first game in charge, Rupel Boom won against KSV Standaard Wetteren with 2–0, after being reduced to 9 men after 40 minutes of play, with a 0–0 on the board.

Halfway through the 2014–15 season, head coach Frank Staes resigned and was replaced by his assistant Serge Van Den Stock, who eventually signed a two-year contract with the club.

With Van Den Stock, Rupel Boom won 6 of its last 11 matches, and drew 2, finishing the season in 5th place.

Former K. Boom FC player and Belgian international Glenn De Boeck was appointed as Technical Advisor.

In March 2019 it was announced the club would be taken over by Beerschot Wilrijk, with the Rupel Boom senior team continuing in the highest amateur league.

[2] Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.